using System;
using System.IO;
using System.Runtime.Serialization;
using System.Text;
using Newtonsoft.Json;
using Newtonsoft.Json.Bson;

namespace Enyim.Caching.Memcached
{
    /// <summary>
    /// Default <see cref="T:Enyim.Caching.Memcached.ITranscoder"/> implementation. Primitive types are manually serialized, the rest is serialized using <see cref="T:System.Runtime.Serialization.NetDataContractSerializer"/>.
    /// </summary>
    public class DataContractTranscoder : DefaultTranscoder
    {
        protected override object DeserializeObject(ArraySegment<byte> value)
        {
            using (var ms = new MemoryStream(value.Array, value.Offset, value.Count))
            {
                using (var reader = new BsonDataReader(ms))
                {
                    JsonSerializer serializer = new JsonSerializer();
                    return serializer.Deserialize(reader);
                }
            }
        }

        protected override ArraySegment<byte> SerializeObject(object value)
        {
            using (var ms = new MemoryStream())
            {
                using (var writer = new BsonDataWriter(ms))
                {
                    JsonSerializer serializer = new JsonSerializer();
                    serializer.Serialize(writer, value);
                }

                return new ArraySegment<byte>(ms.ToArray(), 0, (int)ms.Length);
            }
        }
    }
}

#region [ License information          ]
/* ************************************************************
 * 
 *    Copyright (c) 2010 Attila Kisk? enyim.com
 *    
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *    
 *        http://www.apache.org/licenses/LICENSE-2.0
 *    
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 *    
 * ************************************************************/
#endregion
